Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Organic electroluminescence element and method of manufacturing the same

An electroluminescent element and electroluminescent technology, which are applied to electroluminescent light sources, electrical components, organic semiconductor devices, etc., can solve the problems of plasma damage, difficulty in injecting electrons, and inability to obtain component characteristics, so as to improve the extraction efficiency, Excellent color rendering effect

Inactive Publication Date: 2010-03-03
YAMAGATA PROMOTIONAL ORG FOR INDAL TECH
View PDF2 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the case of merely replacing the reflective electrode with a transparent electrode while maintaining the conventional device structure, it is difficult to inject electrons from the transparent electrode. Due to the plasma damage caused by this, in an element in which the cathode is also formed of a transparent electrode, the same element characteristics as the conventional organic EL element using a reflective electrode cannot be obtained.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Organic electroluminescence element and method of manufacturing the same
  • Organic electroluminescence element and method of manufacturing the same
  • Organic electroluminescence element and method of manufacturing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] By the following method, produced by figure 1 An organic EL transparent element having a layer structure as shown.

[0073] (transparent substrate 1, anode layer 2)

[0074] First, in the order of ultrasonic cleaning using pure water and surfactant, running water cleaning using pure water, ultrasonic cleaning using a 1:1 mixed solution of pure water and isopropanol, and boiling cleaning using isopropanol, the The glass substrate on which the patterned transparent conductive film (ITO) was formed with a film thickness of 300 nm was cleaned. The substrate was slowly pulled up from boiling isopropanol and dried in isopropanol vapor, followed by a UV-ozone cleaning.

[0075] The substrate was used as the anode 1, placed in a vacuum chamber, and evacuated to 1×10 -6 Torr, each molybdenum boat (molybdenum boat) filled with vapor deposition materials and a vapor deposition mask for film formation in a predetermined pattern are set in advance in the vacuum chamber, and the b...

Embodiment 2

[0099] On the ITO (100nm) of the cathode layer of the transparent element produced in Example 1, titanium oxide (anatase (anatase) type manufactured by Kanto Chemical Co., Ltd.: particle size 0.1-0.3 μm) and fluorine oil were directly coated. (fluorinated oil) (Demnums-20 manufactured by Daikin Industries, Ltd.) was dehydrated and degassed at a low dew point (low dew point) and mixed to form a light-diffusing reflective layer with a film thickness of 200 μm.

[0100] Using UV curable resin, it is sealed with another glass plate to obtain an organic EL element.

[0101] image 3 A graph showing the results of evaluating the angular dependence of the spectrum of this element is shown in .

[0102] from figure 2 , 3 It can be confirmed by comparison that, in the case where a light-diffusing reflective layer is provided (Example 2, figure 2 ), the angular dependence of the spectrum is suppressed, and the same color can be seen from all angles.

[0103] In addition, it can b...

Embodiment 3

[0105] By the same method as in Example 1, each electrode layer and light-emitting unit were formed, and four light-emitting units were stacked via the second charge generation layer, and then, by the same method as in Example 2, a light-diffusing reflective layer was formed to produce a multi-layer battery. Organic EL element with photonic structure.

[0106] For the second charge generation layer, Liq was used as an electron-donating substance, and a material of DPB:Liq=75:25 was formed with a film thickness of 17 nm, and aluminum (Al ) into a film, and then, as an electron-accepting substance, MoO 3 The film is formed and formed between each unit.

[0107] When the layer structure of the device is simplified, it is ITO (300nm) / MoO 3 (5nm) / / first unit (blue)[NS21(15nm) / EB43:EB52(30nm,98.8:1.2) / BAlq(5nm)] / / DPB:Liq(17nm,75:25) / Al(0.5nm ) / MoO 3 (2nm) / / The second unit (yellow+blue) [NS21(15nm) / NS21:EY52(20nm, 98.7:1.3) / EB43:EB52(30nm, 98.8:1.2) / BAlq(5nm)] / / DPB: Liq(17nm, 75...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides an organic electroluminescence element and a method of manufacturing the same. In organic electroluminescence element, an anode layer 2, a light emitting unit 3, and a cathode layer 4 which each have optical permeability are stacked on a transparent substrate 1, the cathode layer 4 including a first charge generation layer 4a and a cathode 4c. The cathode 4c is formed by wayof a facing target sputtering method. Even in the case where a cathode material which has optical permeability is used, the organic electroluminescence element is driven at a low applied voltage, hasno angle dependability of an emission spectrum, and has high luminous efficiency.

Description

technical field [0001] The present invention relates to a light-transmitting organic electroluminescent (EL) element suitable for lighting and a method for manufacturing the same. Background technique [0002] Organic EL elements are self-luminous elements that use organic compounds as light-emitting materials. Since they can emit light at a high speed, they are suitable for displaying moving images, and have the characteristics of simplifying the structure of the element and reducing the thickness of the display panel. Owing to having such favorable characteristics, organic EL elements are widely used in daily life as displays for mobile phones and vehicles. [0003] In addition, in recent years, organic EL elements have been attracting attention as next-generation lighting because they exhibit features such as thin surface emission as described above. [0004] In a general organic EL element, one electrode is formed of a reflective electrode made of metal, so light is tak...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/50H01L51/52H01L51/56
CPCH01L51/5221H01L2251/5323H01L51/5092H10K50/171H10K2102/3031H10K50/826H05B33/26H10K50/82
Inventor 小田敦田中纯一河合崇
Owner YAMAGATA PROMOTIONAL ORG FOR INDAL TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com